1. Mathematics Textbook 1B
(a) Go through Chapter 9 (p9 to p11)(b) Attempt Exercise 9.2 Q1 to Q10.
Enter your answers to Exercise 9.2 under Comments. Label your Answers with Question numbers.
2. ACELearning Portal: eLearning Portal
> Subject: Secondary 1 Express> Additional Arithmetic
> Ratio, Rate and Speed: Choose Rate
(a) Go through video lessons: Rate, Average Rate, Example 1, Example 2
(b) Try Practice Drills on your own to check your understanding
Note: An email has been sent to all students via the AceLearning
1. a) $3.50/l
ReplyDeleteb) 72vases/day
c) 47words/min
d) $80/m^2
e) 4kg/m
f) 60g/egg
2. a) $23/hour
b) $920/week
3. a) 9km/l
b) $1.20/l
4. a) 87.5g/cube
b) 0.7g/cm^3 of cube
5. a) $15/ticket
b) $150
6. a) $22.50/m^2
b) $450
7. a) 27l/min
b) 3mins
8. a) $26/kg
b) 25g/m^2
c) $78
9. a) $201 600
b) $4200/m^2
10. a) 19.3g/cm^3
b) No it is not, it is slightly lighter than if made of pure gold.
1) a) $3.50/l
ReplyDeleteb) 72 vases/day
c) 47 words/min
d) $80/m^2
e) 4kg/m
f) 60g/egg
2)a) $23/hour
b) $920/week
3) a) 9km/l
b) $1.20/l
4) a) 87.5g/cube
b) 0.7g/cm^3
5) a) $15/ticket
b) $150
6) a) $22.50/m^2
b) $450
7) a) 27 l/min
b) 3minutes
8) a) $26/kg
b) 25g
c) mass:3kg
cost: $78
9) a) $201 600
b) $4200/m^2
10) a) 19.3g/cm^3
b) No.The gold cube would be lighter in weight if it is made of pure
gold.
1)a)$3.50/l
ReplyDeleteb)72 vases/day
c)47 words/min
d)$80/m^2
c)4kg/m
d)60g/egg
2)a)$23/hour
b)$920/week
3)a)9km/l
b)$1.20/l
4)a)87.5g/cube
b)0.7g/cm^3
5)a)$15/ticket
b)$150
6)a)$22.50/m^2
b)$450
7)a)27 l/min
b)3 minutes
8)a)$26/kg
b)25g
c)mass:$3 cost:$78
9)a)$201 600
b)$4200/m^2
10)a)19.3g/cm^3
b)No. If it were made of pure gold ,like the first cube, It would have had less mass.
1a. $3.50/l
ReplyDelete1b. 72 vases/day
1c. 47 words/min
1d. $80/m^2
1e. 4kg/m
1f. 60g/egg
2a. $23/hour
2b. $920/week
3a. 9km/l
3b. $1.20/l
4a. 87.5g/cube
4b. 0.7g/cm^3
5a. $15/ticket
5b. $150
6a. $22.50/m^2
6b. $450
7a. 27 l/min
7b. 3 minutes
8a. $26/kg
8b. 25g/m^2
8c. $78
9a. $201 600
9b. $4 200/m^2
10a. 19.3g/cm^3
10b. No. This cube should be lighter if it is made of pure gold.
1a) $7/2
ReplyDelete= $3.50/l
1b) 360/5
= 72 vases/day
1c) 376/8
= 47 words/min
1d) $240/3
= $80/m^2
1e) 10kg/2.5
= 4kg/m
1f) 720g/12
= 60g/egg
2a) $184/8
= $23/h
2b) $184 X 5
= $920/week
3a) 225/25
= 9km/l
3b) 30/25
= $1.20/l
4a) 525/6
= 87.5/cube
4b) 5x5x5=125 cm^3
87.5/125
= 0.7g/cm^3
5a) $120/8
= $15/ticket
5b) $15 X 10
= $150/10 tickets
6a) $270/12
= $22.50/m^2
6b) $22.50 X 20
= $450
7a) 9 X 3
= 27 l/min
7b) 60 X 45 X 30 = 81,000 cm^3 = 81 l
81/27
= 3 minutes to fill the tank completely with water
8a) 13 X 2
= $26/kg
8b) 500/20
= 25g/m^2
8c) 15 X 8 = 120m^2
500 X 6 = 3000g
= 3kg
$13 X 6
= $78
9a) 504,000/5 X 2
= $201,600
9b) 504,000/120
= $4200/m^2
10a) 3 X 3 X 3 = 27cm^3
52.11/27
= 19.3g/cm^3
10b) No. That cube is not made up of pure gold as would be heavier if it was made up of pure gold.
1)a. $3.50/l
ReplyDeleteb. 72 vases/day
c. 47 words/min
d. $80/m^2
e. 4kg/m
f. 60g/egg
2) a.$23/hour
b. $920/week
3) a.9km/l
b.$1.20/l
2)a. $23/hour
b. $920/week
3)a. 9km/l
b. $1.20/l
4)a. 87.5g/cube
b. 0.7g/cm^3
5)a. $15/ticket
b. $150
6)a. $22.50/m^2
b. $450
7)a. 27 l/min
b. 3 minutes
8)a. $26/kg
b. 25g/m^2
c. $78
9)a. $201 600
b. $4 200/m^2
10)a.19.3g/cm^3
b. No. The cube should have been a little lighter if its made out of pure gold
1(a)3.50 (b)72 (c)47 (d)80 (e)4 (f)60
ReplyDelete2(a)$23/h (b)$920/week
3(a)9km/litre (b)$1.20
4(a)87.5g (b)0.7g
5(a)$15 (b)$150
6(a)$22.5 (b)$450
7(a)27 litre (b)3min
8(a)$26 (b)25g (c)mass:3kg cost:$78
9(a)$201600 (b)$4200
10(a)19.3g
(b)A pure gold of cube of side 2cm would be 154.4g
This comment has been removed by the author.
ReplyDelete1 (a) $3.50/l
ReplyDelete(b) 72 vases/day
(c) 47 words/min
(d) $80/m^2
(e) 4 kg/m
(f) 60g/egg
2 (a) $23/h
(b) $920/week
3 (a) 9km/litre
(b) $1.20/litre
4 (a) 87.5g/cube
(b) 0.7g/cm^3 of cube
5 (a) $15/ticket
(b) $150
6 (a) $22.5/m^2
(b) $450
7 (a) 27 l/min
(b) 3 min
8 (a) $26/kg
(b) 25g
(c) 3000g; $78
9 (a) $201600
(b) $4200/m^2
10 (a) $19.50/cm^3
(b) Pure gold of 2cm side: 2^3 x $19.30 = 154.40g
Gold cube of 2 cm side: 120g
The gold cube is not pure as referred to the above working shown.
[Oops for the deleted post above, because I missed out an important word in the statement hahaha]
1a: $3.50/L
ReplyDelete1b: $72
1c: 47words/min
1d: $80/m^2
1e: 4kg/m
1f: 60g/egg
2a: $23/h
2b: $920/week
3a: 9km/L
3b: $1.20/L
4a 87.5g/cube
4b 0.7g/cm^3 of cube
5a $15/ticket
5b $150
6a $22.5/m^2
6b $450
7a 27 L/min
7b 3 min
8a $26/kg
8b 25g
8c Mass: 3kg, Cost: $78
9a $201600
9b $4200/m^2
10a $19.50/cm^3
10b Pure gold would be 154.4g, so it is not 100% gold.
1a: $3.50/L
ReplyDelete1b: $72
1c: 47words/min
1d: $80/m^2
1e: 4kg/m
1f: 60g/egg
2a: $23/h
2b: $920/week
3a: 9km/L
3b: $1.20/L
4a 87.5g/cube
4b 0.7g/cm^3 of cube
5a $15/ticket
5b $150
6a $22.5/m^2
6b $450
7a 27 L/min
7b 3 min
8a $26/kg
8b 25g
8c Mass: 3000g,
Cost: $78
9a $201600
9b $4200/m^2
10a $19.50/cm^3
10b No. it is because pure gold cube of side 2 cm weighs 154.4g wheras a gold cube of side 2 cm weighs 120g thus it is not made of pure gold.
1a. $3.50/l
ReplyDelete1b. 72 vases/day
1c. 47 words/min
1d. $80/m^2
1e. 4kg/m
1f. 60g/egg
2a. $23/hour
2b. $920/week
3a. 9km/l
3b. $1.20/l
4a. 87.5g/cube
4b. 0.7g/cm^3
5a. $15/ticket
5b. $150
6a. $22.50/m^2
6b. $450
7a. 27 l/min
7b. 3 minutes
8a. $26/kg
8b. 25g/m^2
8c. $78
9a. $201 600
9b. $4 200/m^2
10a. 19.3g/cm^3
10b. The cube will be lighter if it was pure gold.
1 (a) $3.50/litre
ReplyDelete(b) 72 vases/day
(c)47 words/min
(d) $80/m^2
(e)4kg/m
(f)60g/egg
2 (a)$23/hour
(b) $920/week
3 (a) 9km/l
(b)$1.20/l
4 (a) 87.5g/cube
(b) 0.7g/cm^3
5 (a)$15/ticket
(b)$150
6 (a) $22.50/m^2
(b) $450
7 (a) 27 l/min
(b) 3 minutes
8 (a)$26/kg
(b) 25g/m^2
(c) $78
9 (a)$201 600
(b)$4 200/m^2
10 (a) 19.3g/cm^3
(b)No, it is lighter than pure gold, which means it's probably not real.
1a. $3.50/l
ReplyDelete1b. 72 vases/day
1c. 47 words/min
1d. $80/m^2
1e. 4kg/m
1f. 60g/egg
2a. $23/hour
2b. $920/week
3a. 9km/l
3b. $1.20/l
4a. 87.5g/cube
4b. 0.7g/cm^3
5a. $15/ticket
5b. $150
6a. $22.50/m^2
6b. $450
7a. 27 l/min
7b. 3 minutes
8a. $26/kg
8b. 25g/m^2
8c. $78
9a. $201 600
9b. $4 200/m^2
10a. 19.3g/cm^3
10b. The cube will be lighter if it was pure gold.
1. a) $3.50/litre
ReplyDeleteb) 72vases/day
c) 47words/min
d) $80/m^2
e) 4kg/m
f) 60g/egg
2. a) $23/hour
b) $920/week
3. a) 9km/litre
b) $1.20/litre
4. a) 87.5g/cube
b) 0.7g/cm^3
5. a) $15/ticket
b) $150
6. a) $22.50/m^2
b) $450
7. a) 27l/min
b) 3mins
8. a) $26/kg
b) 25g/m^2
c) $78
9. a) $201 600
b) $4200/m^2
10. a) 19.3g/cm^3
b)No, it is not. It is slightly less dense than pure gold